JET - Professional Jewellers' Certificate

Known as the industry's 'driving licence', this online course is essential for those new to the industry or those who would like to improve their jewellery product knowledge. 

Students have their own online learning environment to submit assignments and manage their studies from anywhere with an internet connection and a web browser. Each student is allocated an expert tutor to provide personal support and guidance for the duration of the course.


The 12 modules will give new jewellery industry professionals a grounding in jewellery products, gemstones and diamonds and modern  manufacturing techniques. 

The NAJ JET Certificate will:

  • Give jewellery industry staff a thorough knowledge of jewellery products and modern manufacturing techniques, enabling them to advise potential customers and clients more effectively

  • Value and recognise jewellery industry staff by giving them access to training to enhance their career and professional development
  • Help recruitment and retention into the jewellery industry by signposting a career pathway to help staff along their jewellery journey
  • Provide an engaging online learning environment that will be equally accessible to both part-time and full-time staff


  • How to deal with a robbery or armed raid
  • The different methods for protecting stock, including physical protection, alarm protection and security procedures
  • The different methods for protecting staff, including opening and closing procedures, vehicle safety procedures and lone working procedures


  • The different types of jewellery on offer
  • Manufacturing techniques and fastenings available for the different types of jewellery
  • Common questions that a customer might ask you


  • The different styles and types of rings, including wedding rings, engagement rings, eternity rings and signet rings
  • Common nomenclature when talking about rings, including different profiles and shapes, and the different parts of a ring
  • Different stone settings
  • How to measure a customer’s ring size
  • How to sell a ring


  • The physical and optical properties of diamonds
  • Diamond formation and production
  • The four C’s (carat weight, cut, clarity and colour) and how they impact on price
  • Different types of diamond cut
  • Consumer confidence
  • Diamond simulants


  • The difference between a mineral and an organic gemstone
  • Physical and optical properties of different gemstones and gemstone families
  • Synthetic gemstones
  • Gemstone treatments
  • How to sell coloured gemstones

Gold, Platinum, Palladium and Silver

  • The formation and production of precious metals
  • The history of precious metals
  • The difference between the physical and optical properties of gold, platinum, palladium and silver
  • Hallmarks used for precious metals
  • Selling, and after-sales care of precious metals
  • Non-precious metals


  • The purpose of hallmarking
  • The history of hallmarking
  • What Assay Offices do, and where they are based
  • Different compulsory hallmarks, including the sponsor mark, town mark and standard mark
  • Methods for testing and hallmarking items
  • How to use Bradbury’s Book of Hallmarks


  • The history, styles and influence of the big jewellery design houses
  • Contemporary designers
  • The definition of bespoke jewellery
  • How to sell bespoke and designer jewellery


  • All stages of the manufacturing process from creating the mould to polishing the finished article
  • Different methods of producing a mould for different volumes and types of production
  • Hand making and finishing techniques
  • Die stamping and electroforming

Silverware and Gifts 

  • The range of silverware and gifts that are on offer in jewellery shops
  • The popularity of certain types of silverware and giftware for different occasions and celebrations
  • How silver and silver-plated items are made
  • How to care of silver and silver-plated items

Watches and Clocks

  • The history of the personal timepiece, from fob watches to wrist watches
  • How mechanical and quartz watches work
  • Key characteristics and features of the different types of watches
  • The terminology associated with watches and clocks
  • The different types of clocks and how they work

Selling and Customer Care

  • How to use interpersonal skills build rapport and trust with a customer
  • The six-stage process for making a successful sale
  • Different sales techniques including add-on, up-selling and top-down selling
  • The contribution of well-cared for and displayed stock to the overall customer experience
  • The importance of following processes and procedures, for example when taking in repairs
  • How to deal with a customer complaint
  • The customer’s legal rights
Study Pack
  • Comprehensive online course notes
  • 'Bradbury's Book of Hallmarks'
  • 'Gemstones' by Cally Hall
  • 'Diamonds' by Marijan Dundek
  • A 10x jeweller's loupe
Bransom Award Winners

Every month, leading retail Jewellery software supplier Bransom recognises the individual who has 'the best' JET Certificate project of the month. Course tutors put forward nominations and a winner is chosen by an external moderator. The individual receives a certificate,  recognition in the Jeweller and is invited to the NAJ Education Awards. 

I'm a sales advisor, so taking JET has helped improve the service I can offer my customers. When I began at F Hinds, my product knowledge was very limited. I was particularly intimidated when it came to selling the more sporty, technical watch styles. JET further helped to expand my knowledge of their mechanics and history, all very interesting. So, I’ve replaced the fear with a new-found love and fascination for watches. I’m now known for fuelling both passion and commitment into my window.

When first pushed to do JET, I was a little hesitant, doubting whether I had the skills to succeed. When I began my first assignment I admit that I felt somewhat daunted and inadequate. However, my tutor was incredibly supportive and gave me lots of positive feedback, which helped to build my confidence. This, in turn, helped me begin to really enjoy my studies. The NAJ training website and the reading materials were all very useful research tools.

I cannot begin to describe how thrilled I am! I’m so glad I had the opportunity to take this course, and so grateful for all the support and encouragement I received from those around me.

Fern Lockley, F Hinds



Chloe Thorn

Phone: 0121 237 1135